Other questions in this quiz

2. why must the alpha particles have been repelled by the same charge that the alpha particles carried?

  • because some alpha particles reflected back
  • because no alpha particles reflected back
  • because all alpha particles reflected back

3. what makes up an atom's nucleus?

  • protons and neutrons
  • electrons

4. what happens if an atom loses one or more outer shell electrons?

  • it becomes a postive ion
  • it become a negative ion
  • its an isotope

5. why was the neutron the last subatomic particle to be discovered?

  • it has no charge
  • it is too small
  • it has a negative charge


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